How to Fertilize Arabian Jasmine

Jasminum sambac

Reviewed by Kiersten Rankel M.S.

Quick Answer

Arabian Jasmine thrives with a balanced to bloom-boosting fertilizer like a 7-9-5 or 10-30-20 during the growing season. Feed every two weeks from spring through early fall, then stop in winter when growth slows. Always dilute to half strength to protect the roots.

When Should I Start Feeding My Arabian Jasmine?

Your feeding window depends on your local climate, since Arabian Jasmine grows best in zones 9a through 11b where warm weather arrives early.

Pacific Feb–Nov

Mountain May–Sep

Midwest Apr–Oct

Northeast May–Oct

Southeast Mar–Nov

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How Often Should I Fertilize My Arabian Jasmine?

During spring and summer, feed your Arabian Jasmine every two weeks with a diluted liquid fertilizer. This matches its vigorous blooming period when it needs the most nutrients.

As fall approaches, taper to once a month at half strength. Stop feeding entirely by late fall. Winter is a rest period, and feeding during this time can cause weak, leggy growth.

If you notice yellowing leaves during the growing season, your plant may need more frequent feeding. Brown leaf tips or white salt crust on the soil surface are signs you are overdoing it.

Feeding Calendar

Spring

Half-strength liquid every 2 weeks as new buds appear

Summer

Half-strength liquid every 2 weeks through peak bloom

Early Fall

Half-strength monthly, tapering off as blooming slows

Late Fall & Winter

No feeding while the plant rests

What Is the Best Fertilizer for Arabian Jasmine?

Arabian Jasmine is a heavy bloomer, so it benefits from a fertilizer with slightly higher phosphorus to support flower production. Look for a balanced or bloom-boosting formula with an NPK ratio like 7-9-5 or 10-30-20.

A water-soluble liquid fertilizer is the easiest option for potted jasmine. Dilute it to half the label rate every two weeks during the growing season.

If you prefer a lower-maintenance approach, a slow-release granular fertilizer applied once in early spring and again in midsummer works well for in-ground plants. Just scratch the granules into the top inch of soil and water them in.

Synthetic

Jack's Classic Blossom Booster 10-30-20

High-phosphorus water-soluble formula designed for flowering plants. Mix 1/2 teaspoon per gallon at half strength for jasmine.

Miracle-Gro Bloom Booster 15-30-15

Widely available bloom fertilizer. Use at half the label rate every two weeks during the growing season.

Organic

Dr. Earth Flower Girl Bud & Bloom Booster 3-9-4

Organic granular with mycorrhizae and beneficial soil microbes. Apply once in spring and again in midsummer.

Neptune's Harvest Fish & Seaweed 2-3-1

Gentle liquid organic blend that promotes steady blooming. Dilute 1 tablespoon per gallon every two weeks.

How Do I Fertilize My Arabian Jasmine?

Water your plant first

Give your Arabian Jasmine a thorough watering about an hour before fertilizing. Moist soil protects the roots from fertilizer burn.

Measure and dilute

Mix your liquid fertilizer at half the strength recommended on the label. For most bloom-boosting concentrates, that means about 1/4 teaspoon per gallon of water.

Apply to the soil evenly

Pour the diluted solution around the base of the plant, avoiding the leaves and flowers. Wet foliage can develop spots from fertilizer salts.

Let excess drain

If your jasmine is in a pot, let the solution flow through and drain completely. Never let the pot sit in the runoff tray.

Flush the soil monthly

Once a month, water deeply with plain water to wash out any salt buildup. This keeps the roots healthy and prevents leaf tip burn.

Got More Questions?

Can I use coffee grounds on my Arabian Jasmine?

Arabian Jasmine prefers slightly acidic soil, so small amounts of used coffee grounds mixed into the top layer of soil can be helpful. However, coffee grounds alone do not provide balanced nutrition. Use them as a supplement, not a replacement for fertilizer.

What happens if I over-fertilize my jasmine?

You will see brown or crispy leaf tips, white salt deposits on the soil surface, and fewer flowers. If this happens, flush the soil with plain water several times and skip feeding for a month before starting again at a lower dose.

Should I fertilize my Arabian Jasmine while it is blooming?

Yes. Arabian Jasmine blooms repeatedly through spring and summer, and regular feeding supports continuous flower production. Just stick with half-strength doses to avoid stressing the plant.

Why are my jasmine's leaves turning yellow even though I am fertilizing?

Yellow leaves can signal iron deficiency, which is common in alkaline soil. Try watering with a diluted iron supplement or switching to a fertilizer that includes trace minerals. Check that your soil pH is between 6.0 and 6.5.

Can I use banana peels to fertilize my jasmine?

Banana peels break down very slowly and deliver minimal nutrients to potted plants. They can also attract fungus gnats. A proper liquid fertilizer is far more effective and reliable.

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About This Article

Kiersten Rankel M.S.

Botanical Data Lead at Greg · Plant Scientist

About the Author

Kiersten Rankel holds an M.S. in Ecology & Evolutionary Biology from Tulane University. A certified Louisiana Master Naturalist, she has over a decade of experience in science communication, with research spanning corals, cypress trees, marsh grasses, and more. At Greg, she curates species data and verifies care recommendations against botanical research.

See Kiersten Rankel's full background on LinkedIn.

Editorial Process

Fertilizer recommendations verified against Jasminum sambac growth data from Greg's botanical database, cross-referenced with USDA hardiness zone data and published horticultural research.

3,243+ Greg users growing this plant

USDA hardiness zones 9a–11b

Citations:
Missouri Botanical Garden
Royal Horticultural Society
USDA Plants Database

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